EM-180
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EM-180 ON-OFF DC-MOTOR DRIVER 12/24Vdc 10A FEATURES: • Fast change of direction • Soft start-up, acceleration ramp • Settable current limit • Trip or continuous current limit • High efficiency • Dynamic braking • High momentary load capacity • Rail base fittable • Freewheel option • Two control modes EM-180 is developed for controlled ON-OFF driving and direction change of a DC-motor with brushes. Driver has advanced current limit features. It limits the motor current in start-up and jamsituations and that way protects the motor and mechanics from over torque. Driver has also an error output to indicate error / over current situations. The acceleration ramp time for start-up is adjustable to suit each application. In other word the motor voltage is slowly rised to give a smooth start-up. As the control is set off, the motor is dynamically braked with so called short-circuit braking. The motor poles are connected together. The reverse and forward commands can be set with positive or negative control. The freewheel command sets motor run free. Freewheel overrides forward and backwards commands. The current protection is double acting. First there is a continuous and adjustable current limit which decreases the motor voltage if the current exceeds the adjusted value. Second there is settable trip feature that cuts the motor voltage if the current limit value is exceeded (after trip delay 2ms). After trip the motor starts only to the opposite direction. Additionally the driver doubles the adjusted current value for 0.3 seconds in start-up to ensure sufficient power to overcome the start-up friction. Error output indicates the activation of the current limit. TECHNICAL DATA Supply Over voltage protection Idle current Driving current Current limit Current trip delay Start delay Stop delay Direction change time Voltage loss Operating frequency Ramp Digital inputs Error output Operating temp (Ta) Measures Weight CONTROL TYPE ERROR CONTROL LOGIC POWER STAGE

Supply should be filtered 12-32Vdc, max. ripple <30% on full load. ATT. Wrong supply polarity can damage the driver. ATT. Driver has no fuse in it. Choose the current limit mode: continuous/tripping Trip jumper: on=tripping limit, off=continuous limit Choose control mode (forward / backwards) pos = PNP positive control neg = NPN negative control CONTROL MODE neg. pos. TRIP "off" “on” RAMP Choose the ramp time CURRENT Choose the current limit value / Amps. 13 11 ATTENTION - The current limit values can be affected by the used motor. - In start-up the current limit value is doubled (for...